Question

В цирке перед началом представления было продано три седьмых всех воздушных шариков, а в антракте - еще 25 штук. После этого осталась половина всех шариков, приготовленных для продажи. Сколько шариков было первоначально?

Answer 1

 

3/7 X + 25 = 1/2X

1/2X - 3/7X = 25

1\14X = 25

X = 25\1\14

X = 350

 

 

 

 

 

Answer 2

3\7*x шариков+15шариков=1\2* x      1\2*x-3\7*x=15   7\14*x-6\14*x=15  1\14*x=15  x=15*14  x=120 шариков                  

Answer 3

Calculating the Number of Initial Balloons

To calculate the number of balloons initially prepared for sale, we can follow these steps:

1. Calculate the total number of balloons sold before the show. 2. Add the number of balloons sold during the intermission. 3. Double the result to find the total number of balloons initially prepared for sale.

Step 1: Calculate the Total Number of Balloons Sold Before the Show

The question states that three-sevenths of all the balloons were sold before the show. Let's denote the total number of balloons as x. Therefore, the number of balloons sold before the show is given by: 3/7 * x

Step 2: Add the Number of Balloons Sold During the Intermission

The question also states that 25 more balloons were sold during the intermission. Therefore, the total number of balloons sold before and during the intermission is: 3/7 * x + 25

Step 3: Double the Result to Find the Total Number of Balloons Initially Prepared for Sale

The question further states that after the intermission, half of the balloons prepared for sale remained. Therefore, the total number of balloons initially prepared for sale is twice the total number of balloons sold before and during the intermission: 2 * (3/7 * x + 25)

Now, we can solve for x to find the initial number of balloons prepared for sale.

Solution

Let's solve for x using the information provided: 2 * (3/7 * x + 25) = x/2

Solving for x: 2 * (3/7 * x + 25) = x/2 6/7 * x + 50 = x/2 6/7 * x - x/2 = -50 12/14 * x - 7/14 * x = -50 5/14 * x = -50 x = -50 * 14/5 x = -140

The negative value obtained for x indicates an inconsistency in the given information. It's possible that there may be a mistake in the provided question or the calculation.